大型装备应变检测中光纤Bragg光栅的应用研究

Research on Application of Fiber Bragg Grating in Large Scale Equipments′ Strain Detection

从光纤Bragg光栅(FBG)衍射的射线理论入手,介绍了其传感原理;结合大型装备的应变检测,阐明了解决交叉敏感问题的原理及方法;对应变检测中光纤光栅封装技术的现状进行了概述,并指出当前封装技术存在的问题和发展方向;简要介绍了光纤光栅应变传感器的标定方法及注意事项。

Based on the ray theory of fiber grating diffraction, the sensing principle of fiber Bragg grating（FBG） was introduced. In consideration of the strain detection in practice of large scale equipments, expatiated on the principle and solution about temperature and strain cross sensitivity of FBG. Then the actuality of FBG packaging techniques in strain detection were summarized. The problems in existence and the developing direction of packaging techniques were pointed out. Finally, the way of calibration on FBG sensor and some notice was briefly introduced.